Question

(2x,y-2x)=(3y,3) determine os números reais de x e y?

Answer 1

2x=3y
x=3y/2
x=3(-6)/2
x=-9

y-2x=3
y-2(3y/2)=3
y-6y/4=3
4y-6y=12
-2y=12(-1)
y=-12/2
y=-6